Remove dead code, unused dependencies, and stale docs

Author: kylebrowning

Package.swift

@@ -23,7 +23,6 @@ let package = Package(
         .package(url: "https://github.com/apple/swift-docc-plugin", from: "1.0.0"),
         .package(url: "https://github.com/apple/swift-nio.git", from: "2.42.0"),
         .package(url: "https://github.com/apple/swift-nio-ssl.git", from: "2.6.0"),
-        .package(url: "https://github.com/apple/swift-nio-http2.git", from: "1.9.0"),
     ],
     targets: [
         .executableTarget(
@@ -67,13 +66,9 @@ let package = Package(
         .target(
             name: "APNSTestServer",
             dependencies: [
-                .product(name: "Logging", package: "swift-log"),
-                .product(name: "Crypto", package: "swift-crypto"),
                 .product(name: "NIOCore", package: "swift-nio"),
                 .product(name: "NIOPosix", package: "swift-nio"),
-                .product(name: "NIOSSL", package: "swift-nio-ssl"),
                 .product(name: "NIOHTTP1", package: "swift-nio"),
-                .product(name: "NIOHTTP2", package: "swift-nio-http2"),
                 .product(name: "NIOConcurrencyHelpers", package: "swift-nio"),
             ]
         ),

Package@swift-5.10.swift

@@ -23,7 +23,6 @@ let package = Package(
         .package(url: "https://github.com/apple/swift-docc-plugin", from: "1.0.0"),
         .package(url: "https://github.com/apple/swift-nio.git", from: "2.42.0"),
         .package(url: "https://github.com/apple/swift-nio-ssl.git", from: "2.6.0"),
-        .package(url: "https://github.com/apple/swift-nio-http2.git", from: "1.9.0"),
     ],
     targets: [
         .executableTarget(
@@ -67,13 +66,9 @@ let package = Package(
         .target(
             name: "APNSTestServer",
             dependencies: [
-                .product(name: "Logging", package: "swift-log"),
-                .product(name: "Crypto", package: "swift-crypto"),
                 .product(name: "NIOCore", package: "swift-nio"),
                 .product(name: "NIOPosix", package: "swift-nio"),
-                .product(name: "NIOSSL", package: "swift-nio-ssl"),
                 .product(name: "NIOHTTP1", package: "swift-nio"),
-                .product(name: "NIOHTTP2", package: "swift-nio-http2"),
                 .product(name: "NIOConcurrencyHelpers", package: "swift-nio"),
             ]
         ),

Sources/APNS/APNS.docc/APNSwift.md

@@ -68,18 +68,8 @@ These can be configured when created your `APNSClientConfiguration`
 openssl pkcs8 -nocrypt -in /path/to/my/key.p8 -out ~/Downloads/key.pem
 ```
 
-## Logging
-By default APNSwift has a no-op logger which will not log anything. However if you pass a logger in, you will see logs.
-
-There are currently two kinds of loggers.
-#### **Background Activity Logger**
-This logger can be passed into the `APNSClient` and will log background things like connection pooling, auth token refreshes, etc. 
-
-#### **Notification Send Logger**
-This logger can be passed into any of the `send:` methods and will log everything related to a single send request. 
-
 ## Server Example
-Take a look at [Program.swift](https://github.com/swift-server-community/APNSwift/blob/main/Sources/APNSwiftExample/Program.swift)
+Take a look at [Program.swift](https://github.com/swift-server-community/APNSwift/blob/main/Sources/APNSExample/Program.swift)
 
 ## iOS Examples
 

Sources/APNS/APNSBroadcastClient.swift

@@ -21,12 +21,9 @@ import struct FoundationEssentials.UUID
 import struct Foundation.Date
 import struct Foundation.UUID
 #endif
-import NIOConcurrencyHelpers
 import NIOCore
 import NIOHTTP1
 import NIOSSL
-import NIOTLS
-import NIOPosix
 
 /// A client for managing Apple Push Notification broadcast channels.
 public final class APNSBroadcastClient<Decoder: APNSJSONDecoder & Sendable, Encoder: APNSJSONEncoder & Sendable>: APNSBroadcastClientProtocol {

Sources/APNS/APNSClient.swift

@@ -21,12 +21,9 @@ import struct FoundationEssentials.UUID
 import struct Foundation.Date
 import struct Foundation.UUID
 #endif
-import NIOConcurrencyHelpers
 import NIOCore
 import NIOHTTP1
 import NIOSSL
-import NIOTLS
-import NIOPosix
 
 /// A client to talk with the Apple Push Notification services.
 public final class APNSClient<Decoder: APNSJSONDecoder, Encoder: APNSJSONEncoder>: APNSClientProtocol {

Sources/APNS/APNSConfiguration.swift

@@ -15,7 +15,6 @@
 import APNSCore
 @preconcurrency import Crypto
 import NIOSSL
-import NIOTLS
 import AsyncHTTPClient
 
 /// The configuration of an ``APNSClient``.

Sources/APNSCore/APNSClient.swift

@@ -12,7 +12,7 @@
 //
 //===----------------------------------------------------------------------===//
 
-public protocol APNSClientProtocol {
+public protocol APNSClientProtocol: Sendable {
     func send(_ request: APNSRequest<some APNSMessage>) async throws -> APNSResponse
     func shutdown() async throws
 }

Sources/APNSCore/APNSErrorResponse.swift

@@ -14,7 +14,7 @@
 
 /// A struct for the error response of APNs.
 ///
-/// This is just used to decode the JSON and should not be exposed.
+/// This decodes the JSON body APNs returns alongside a non-success status code.
 public struct APNSErrorResponse: Codable, Sendable {
     /// The error code indicating the reason for the failure.
     public var reason: String

Sources/APNSCore/APNSRequest.swift

@@ -19,7 +19,12 @@ import struct Foundation.UUID
 #endif
 
 public struct APNSRequest<Message: APNSMessage> {
-    fileprivate final class _Storage {
+    // `_Storage` is a private copy-on-write backing store: `APNSRequest`'s mutating accessors
+    // always check `isKnownUniquelyReferenced` before mutating in place, copying first if the
+    // storage might be shared. That discipline guarantees exclusive access to any given
+    // instance's mutable state, so sharing it across concurrency domains is safe even though
+    // its properties are `var`.
+    fileprivate final class _Storage: @unchecked Sendable {
         var message: Message
         var deviceToken: String
         var pushType: APNSPushType
@@ -108,6 +113,8 @@ public struct APNSRequest<Message: APNSMessage> {
     }
 }
 
+extension APNSRequest: Sendable where Message: Sendable {}
+
 extension APNSRequest._Storage {
     func copy() -> APNSRequest._Storage {
         APNSRequest._Storage(